Thomas walsh and august



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moms WALSH AND AUGUSTIN WALSH,r orf NNW YORK, N. Y. ,Letters Patent No. 73,678, .dated January 21, 1868.

IMPROVE) BUGKETS PQR DREDGING-MAGHINES,

TO ALL WHOM TT MAY GONGERN: A

Be it known that we, THOMAS WALSH and AUG-UsTIN WALSH, of the city, county, and State of New York, have invented va, new and useful Improvement in Operting Buckets for Dredging-Machines; and we do hereby declcrethat the following is s. full, clear, and exact description thereof,iwhich will enable-others skilled in the crt to make und use the same, reference being had to the accompanying drawings, forming part of this specification.

The present invention relates to a new and easy mode of dumping the contents of buckets of dredgingmachines, bymea,ns of having the buckets made in the form of a quadrant, with hinged arms attached to them, in such a manner that theycan be opened'and closed at the pleasure of the operator, in the dredging-vessel; all of' which will be understood from the following, reference being had to the accompanying drawings, in which- Figure 1 represents a. section through the line a: x, and

Figure 2 is a plan ofthe salme, with port brokenlnwa-y to showmlore clearly.

This dredging-bucket is made in the form lof a semicircle, and is divided into two parts, a and a', which are hinged together by means of the shaft b, which extends lengthwise across the buckets, as clearly shown in iig.

, 2. c e are jointed arms, one of which is secured firmly to each end of the bucket, the shaft b passing through them, thus serving as a, fulcrum. The upper joints of these arms ere pivotedl on the shaft d, in the centre of which shaft are two eyes or hooks, to which the chains e andf are attached. These chains run over the cranearm of the dredging-machine in the usual manner. g is va. pulley-wheel, on the ycentre of the shaft L, around which the chain e runs,which is secured to the eye or hook on the under side of the shaft d. l

When it is desired to dump the load contained in the bucket, the chain e is pulled, which will draw the buckets open, as clearly shown in red outline in the ,accompanying drawings, iig. 1,'and the weight of the buckets will, when the chain e is released, cause themselnes to close. v

h z, are two rods, one ofwhich is attached to each end of the shaft b. .AI-hole is inadein the upper shaft d, through which the rod 7L posses loosely, so as to allow the same to be drawn up and down as the buckets are opened and closed, and thus serve as a stiffening-guide to keep the arms from twisting or being bent from straining. l Y

We claim as new, and desire to secure by Letters Patent- The arrangement of the jointed levers c, shaft guide-rods h, shaft d, chain e,A and buckets a a', when the shsft'ol is adapted to be drawn down to the shaft b by the chain e, for opening the buckets, Vthe guide-rods k passing throughthe shaft d, as herein shown and described.

, THOMAS WALSH,

AUGUSTIN WALSH.

Witnesses:

WM. F. McNAMAnA, ALEX, F. ROBERTS. 

